Polymer spinneret needle for electrospun nanofibers

A nanofiber and electrospinning technology, which is applied in fiber processing, textiles and papermaking, filament/wire forming, etc., can solve the problems of effective and stable nanofiber production, serious nanofiber spinning production efficiency, and difficulty in replacement, etc. problems, to eliminate violent spraying, reduce shutdown maintenance time, and improve production efficiency

Inactive Publication Date: 2019-10-08
北京英鸿光大科技有限公司
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Most of the nozzles of existing electrospinning machines are fixed and difficult to replace. Moreover, with the production of nanofibers, blockages will occur from time to time, and they need to be shut down for cleaning or replacement, which is not conducive to the effective and stable production of nanofibers. Serious Spinning production efficiency of effective nanofibers

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Polymer spinneret needle for electrospun nanofibers
  • Polymer spinneret needle for electrospun nanofibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] As shown in the figure, a polymer spinning needle for electrospinning nanofibers is characterized in that it includes a nozzle body and a detachable needle unit, and the nozzle body is provided with a nozzle pipeline for polymer supply, used The nozzle distributor for the uniform distribution of the polymer and the nozzle inner cavity for the polymer to flow to the needle unit, the number of the needle unit is multiple, and the multiple needle units are detachably connected with the nozzle tube body and evenly distributed on the nozzle on the spherical end of the tube;

[0023] Wherein, the nozzle pipe is a straight line pipe and communicates with the nozzle distributor. The nozzle distributor is hollow spherical, and the surface of the upper half of the spherical shape is provided with a plurality of distribution channels for polymer circulation. Holes, a plurality of the distribution through holes are evenly distributed, and communicate with the inner cavity of the no...

Embodiment 2

[0026] In this embodiment, the needle unit is detachably and airtightly connected to the nozzle body through plugging, clamping or threaded connection;

[0027] Wherein, the needle unit includes a connecting part and a needle tube, the needle unit is connected with the nozzle body through the connecting part, and communicates with the inner cavity of the nozzle and the needle tube, and the needle tube is a flexible tube, and a plurality of soft metal wires are embedded in it , the soft metal wire is electrically connected to the connecting part, and the nozzle body is electrically connected to the needle unit;

[0028] Wherein, the soft metal wire is one of iron wire, copper wire, silver wire or aluminum wire.

[0029] Most of the existing spinneret needles are fixed and difficult to replace. In this embodiment, the needle unit is improved, replaced by a hose, and a conductive soft metal wire is implanted inside. During the electrospinning process, the soft metal The filament...

Embodiment 3

[0031] In this embodiment, the distribution through hole is in the shape of a bell mouth, and the small mouth of the bell mouth is connected to the inside of the nozzle distributor, and the large mouth is connected to the inner cavity of the nozzle;

[0032] This design is also to stabilize the polymer pressure in the inner cavity of the nozzle. When the polymer injection volume is large, the general needle will inject a large amount of polymer, which is very easy to cause needle blockage. In this embodiment, if the polymer injection volume is excessive , when the polymer passes through the distribution hole of the bell mouth, the pressure will be quickly dispersed, and the polymer injected by the needle unit will only increase slightly, and there will be no violent injection.

[0033] In summary, the principle of the present invention is simple and the design is reasonable, which can effectively improve the spinning efficiency and the spinning uniformity. Moreover, the needle ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a polymer spinneret needle for electrospun nanofibers. The polymer spinneret needle comprises a spinneret tube and detachable needle units, a spinneret duct, a spinneret distributor and a spinneret inner cavity are arranged in the spinneret tube, each needle unit comprises a connecting portion and a needle tube, the needle tube is a hose, and soft metal wires are embedded into the needle tube. The polymer spinneret needle is simple in principle and reasonable in design, spinning efficiency can be effectively improved, and spinning uniformity is improved. Moreover, the needle units can adjust spinneret directions along with change of positions, the number of the needle units is proper, stopping maintenance time is reduced, and nanofiber production efficiency is improved. Besides, polymer pressure in the spinneret inner cavity can be controlled, sharp spray of polymers and blockage of the needle are eliminated, and rapid and stable spinning is realized.

Description

technical field [0001] The invention relates to the technical field of nanofiber production, in particular to a polymer spinning needle for electrospinning nanofibers. Background technique [0002] Nanofibers are mostly produced by electrospinning machines through electrospinning. [0003] In the process of electrospinning, the reconciled polymer solution supplies the polymer to the spinning needle on the electrospinning machine through the supply mechanism, so that the polymer solution is ejected from the needle and moves in the electrostatic stand, thereby Electrospinning to obtain nanofibers. [0004] Most of the nozzles of existing electrospinning machines are fixed and difficult to replace. Moreover, with the production of nanofibers, blockages will occur from time to time, and they need to be shut down for cleaning or replacement, which is not conducive to the effective and stable production of nanofibers. Serious Spinning production efficiency of effective nanofiber...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/00
CPCD01D5/0069
Inventor 崔建中
Owner 北京英鸿光大科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap